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Physics Definitions Start from K


Abbreviated K. A unit of absolute temperature. Zero degrees Celsius is equal to 273.16 Kelvin.

Kelvin temperature scale

A scale of temperature based on Absolute Zero. Zero degrees kelvin is equivalent to - 273 degrees Celsius (- 459 degrees Fahrenheit).


One thousand electron volts.


Abbreviated km. 1 km = 1000 meters = 105 cm = 0.62 mile.

Kepler’s Laws

Three laws of motion of bodies attracted together by the gravitational force.


SI unit of mass.

Kilowatt Hour

Amount of energy equal to 3.6 * 10^ 6 J. Usually used in electrical measurement.


Study of motion of objects without regard to the causes of this motion.

Kinetic Energy

Energy of object due to its motion.

Kinetic-Molecular Energy

Description of matter as being made up of extremely small particles in constant motion.

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